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Hole''s essentials of human anatomy and physiology 8th ed.

2001年

作者： ricki lewis

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Holes essentials of human anatomy and physiology /

2003年

作者： David Shier Jackie Butler ricki lewis

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1000年

作者： David Shier Jackie Butler ricki lewis.

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九十年代生物技术十大研究热点

世界科学 1990年第11期 15-16页

作者： ricki lewis 荣惠

70年代生物技术刚刚兴起时,它主要致力于DNA分子在细菌中的构建和表达。如果将这些前驱性努力看作是一股单线的话,那么,90年代的生物技术已成为一块经纬交错的织物了。尽管线线相联,但每一股线都代表着整体中的一个独特方面。进入90年... 详细信息

70年代生物技术刚刚兴起时,它主要致力于DNA分子在细菌中的构建和表达。如果将这些前驱性努力看作是一股单线的话,那么,90年代的生物技术已成为一块经纬交错的织物了。尽管线线相联,但每一股线都代表着整体中的一个独特方面。进入90年代的生物技术有以下十大研究热点。一、基因扩增美国Cetus公司开发的聚合酶链反应(PCR)技术,使天然DNA复制和特定段扩增的应用得到进一步开拓。例如: 在英国,从人受精卵的一个分裂球中取得DNA,经PCR扩增并用性染色体特异探针检查,证实是女性胚胎后再移植到供者的子宫,以避免供者所患的一种遗传病——Lesch Nyhan综合症——传给子代。(译者注:有些遗传病传男不传女。)

关键词：生物技术蛋白质工程生物工程重组微生物囊性纤维性变

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用于起诉见证的DNA指纹术

世界科学 1989年第12期 24-26页

作者： ricki lewis 何新华

1986年,春季在奥兰多发生了一些强奸和暴力案件。所有这些案件皆发生在午夜后的被害人家中.罪犯通常在黑暗中袭击妇女,有时是在妇女们熟睡时,罪犯手持匕首并总是用被单或毯子把她们的头部蒙住。第1次作案时间是5月9日.受害者名叫南茜·... 详细信息

1986年,春季在奥兰多发生了一些强奸和暴力案件。所有这些案件皆发生在午夜后的被害人家中.罪犯通常在黑暗中袭击妇女,有时是在妇女们熟睡时,罪犯手持匕首并总是用被单或毯子把她们的头部蒙住。第1次作案时间是5月9日.受害者名叫南茜·霍奇,芳龄27。午夜刚过,正当她在浴室里取出她的隐形眼镜之时,听见门厅里有响动声。旋即转过头来她看见一名男子拦住了她的逃路。在浴室明亮的灯光

关键词： DNA 伯尔尤斯型式碎片建筑砌块罪犯

Guaranteed Cost Attitude Tracking Control for Uncertain Quadrotor Unmanned Aerial Vehicle Under Safety Constraints

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1447-1457页

作者： Qian Ma Peng Jin Frank L.lewis School of Automation Nanjing University of Science and TechnologyNanjing 210094China UTA Research Institute University of Texas at ArlingtonFort WorthTexas 76118 USA IEEE

In this paper,guaranteed cost attitude tracking con-trol for uncertain quadrotor unmanned aerial vehicle(QUAV)under safety constraints is ***,an augmented system is constructed by the tracking error system and reference *** transformation aims to convert the tracking control prob-lem into a stabilization control ***,control barrier function and disturbance attenuation function are designed to characterize the violations of safety constraints and tolerance of uncertain disturbances,and they are incorporated into the reward function as penalty *** on the modified reward function,the problem is simplified as the optimal regulation problem of the nominal augmented system,and a new Hamilton-Jacobi-Bellman equation is ***,critic-only rein-forcement learning algorithm with a concurrent learning tech-nique is employed to solve the Hamilton-Jacobi-Bellman equa-tion and obtain the optimal *** proposed algorithm can not only ensure the reward function within an upper bound in the presence of uncertain disturbances,but also enforce safety *** performance of the algorithm is evaluated by the numerical simulation.

关键词： Attitude tracking control quadrotor unmanned aerial vehicle(QUAV) reinforcement learning safety constraints uncertain disturbances.

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Error-based adaptive optimal tracking control of nonlinear discrete-time systems

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Science China(Information Sciences) 2024年第1期67卷 154-167页

作者： Chun LI Jinliang DING Frank L.lewis Tianyou CHAI State Key Laboratory of Synthetical Automation for Process Industries Northeastern University UTA Research Institute The University of Texas at Arlington

In this paper,for the output tracking problem of nonlinear discrete-time systems,a performance index is newly defined using the adaptive dynamic programming(ADP) technique to completely eliminate tracking errors in *** contrast to traditional definitions of performance indices in other ADP-based methods,the proposed performance index is not only designed from the perspective of output tracking errors but also introduced errors of system states and control inputs at adjacent stages,which is suitable for practical situations in many industrial applications,such as the alumina production,the flotation process,and the mineral grinding *** proved that the obtained controller can make the system output fully track the given reference trajectory by applying the iterative criteria of the ADP *** addition,the proposed algorithm was implemented using a data-driven technique and neural networks to avoid analyzing and deducing the complicated dynamics of actual industrial ***,using historical data for a forced-circulation evaporation system in the alumina production process,the effect of the proposed approach was verified through a numerical simulation and compared with that of the proportional-integral controller.

关键词： adaptive dynamic programming iterative criteria performance index tracking errors tracking problem

Control Policy Learning Design for Vehicle Urban Positioning via BeiDou Navigation

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Journal of Systems Science & Complexity 2024年第1期37卷 114-135页

作者： QIN Yahang ZHANG Chengye CHEN Ci XIE Shengli lewis Frank L School of Automation Guangdong University of TechnologyGuangzhou 510006China Guangdong Key Laboratory of IoT Information Technology Guangzhou 510006China. Center for Intelligent Batch Manufacturing Based on IoT Technology Key Laboratory of Intelligent Detection and The Internet of Things in Manufacturing Ministry of EducationGuangzhou 510006China Guangdong-HongKong-Macao Joint Laboratory for Smart Discrete Manufacturing Guangzhou 510006China Key Laboratory of Intelligent Information Processing and System Integration of IoT Ministry of EducationGuangzhou 510006China. UTA Research Institute The University of Texas at ArlingtonFort WorthTX 76019USA

This paper presents a learning-based control policy design for point-to-point vehicle positioning in the urban environment via BeiDou *** navigating in urban canyons,the multipath effect is a kind of interference that causes the navigation signal to drift and thus imposes severe impacts on vehicle localization due to the reflection and diffraction of the BeiDou ***,the authors formulated the navigation control system with unknown vehicle dynamics into an optimal control-seeking problem through a linear discrete-time system,and the point-to-point localization control is modeled and handled by leveraging off-policy reinforcement learning for feedback *** proposed learning-based design guarantees optimality with prescribed performance and also stabilizes the closed-loop navigation system,without the full knowledge of the vehicle *** is seen that the proposed method can withstand the impact of the multipath effect while satisfying the prescribed convergence rate.A case study demonstrates that the proposed algorithms effectively drive the vehicle to a desired setpoint under the multipath effect introduced by actual experiments of BeiDou navigation in the urban environment.

关键词： BeiDou navigation multipath effect prescribed convergence rate reinforcement learning urban localization.

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Recent Progress in Reinforcement Learning and Adaptive Dynamic Programming for Advanced Control Applications

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 18-36页

作者： Ding Wang Ning Gao Derong Liu Jinna Li Frank L.lewis IEEE the Faculty of Information Technology Beijing Key Laboratory of Computational Intelligence and Intelligent SystemBeijing Laboratory of Smart Environmental Protectionand Beijing Institute of Artificial IntelligenceBeijing University of TechnologyBeijing 100124China the School of System Design and Intelligent Manufacturing Southern University of Science and TechnologyShenzhen 518055China the Department of Electrical and Computer Engineering University of Illinois at ChicagoChicago IL 60607 USA the School of Information and Control Engineering Liaoning Petrochemical UniversityFushun 113001China the UTA Research Institute the University of Texas at ArlingtonArlington TX 76118 USA

Reinforcement learning(RL) has roots in dynamic programming and it is called adaptive/approximate dynamic programming(ADP) within the control community. This paper reviews recent developments in ADP along with RL and its applications to various advanced control fields. First, the background of the development of ADP is described, emphasizing the significance of regulation and tracking control problems. Some effective offline and online algorithms for ADP/adaptive critic control are displayed, where the main results towards discrete-time systems and continuous-time systems are surveyed, ***, the research progress on adaptive critic control based on the event-triggered framework and under uncertain environment is discussed, respectively, where event-based design, robust stabilization, and game design are reviewed. Moreover, the extensions of ADP for addressing control problems under complex environment attract enormous attention. The ADP architecture is revisited under the perspective of data-driven and RL frameworks,showing how they promote ADP formulation ***, several typical control applications with respect to RL and ADP are summarized, particularly in the fields of wastewater treatment processes and power systems, followed by some general prospects for future research. Overall, the comprehensive survey on ADP and RL for advanced control applications has d emonstrated its remarkable potential within the artificial intelligence era. In addition, it also plays a vital role in promoting environmental protection and industrial intelligence.

关键词： Adaptive dynamic programming(ADP) advanced control complex environment data-driven control event-triggered design intelligent control neural networks nonlinear systems optimal control reinforcement learning(RL)

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基因疗法准备就绪

环球科学 2014年第4期 68-73页

作者：里基·刘易斯(ricki lewis) 戴雨橙(翻译) 不详复旦大学医学中心

15年前，基因疗法遭遇了一系列悲剧性挫折，使得科学家开始对其进行严格的重新评估；15年后，基因疗法已经做好准备，即将进入临床。

关键词：基因疗法悲剧性科学家